This is a new project for us. For years we have searched for a useable groupware project. Zimbra uses a similar business model to Untangle. There is an open source version and a paid / supported version.

We have just finished testing and may have a 5+ site roll-out scheduled in two weeks. Update: Project was given to Google. Client's management overrode their own IT department. Stay tuned...

If you are looking at a viable replacement for Microsoft Exchange, Novell Groupwise or IBM Domino Server, you may want to take a look at what Zimbra has to offer.

I need to quickly mention that Zimbra also offers email archiving for those entities that have to meet applicable regulatory requirements.

Tags: Email, Calendar, Groupware, Spam FIlter, Anti-Virus, Document Management, Instant Messenger, Archiving, Open Source